Tokyo, Japan

Minoru Yoshii

USPTO Granted Patents = 55 

Average Co-Inventor Count = 4.1

ph-index = 20

Forward Citations = 1,393(Granted Patents)

Forward Citations (Not Self Cited) = 1,340(Oct 12, 2025)


Inventors with similar research interests:


Location History:

  • Higashinakano, JP (1998)
  • Utsunomiya, JP (2009)
  • Tokyo, JP (1987 - 2015)

Company Filing History:


Years Active: 1987-2015

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55 patents (USPTO):

Title: Innovations of Minoru Yoshii: Pioneering Patents in Optical Technologies

Introduction

Minoru Yoshii is a prominent inventor based in Tokyo, JP, recognized for his significant contributions to the field of optical technology. With a remarkable portfolio of 55 patents, Yoshii has demonstrated his commitment to advancing innovation, particularly in optical coherence tomography and exposure apparatus technologies.

Latest Patents

Among his latest patents, the "Optical coherence tomography apparatus and method" stands out. This innovative OCT apparatus includes a first light source that adjusts the wavelength of emitted light and a second light source that provides light at a specific wavelength. The apparatus is designed to ensure that light emitted from the first source can be detected effectively by a second optical detector, enhancing imaging capabilities.

Another significant patent from Yoshii is the "Exposure apparatus and device manufacturing method". This exposure apparatus features an illumination optical system that is responsible for illuminating a reticle and a projection optical system that projects the reticle's pattern onto a substrate. Moreover, the design includes a polarization adjuster that allows for independent adjustment of each polarization state across multiple areas in the effective light source distribution. A polarization measurement unit measures the polarization state of the light post-adjustment, enabling a controller to optimize performance based on these measurements.

Career Highlights

Minoru Yoshii's career has been intricately tied to Canon Kabushiki Kaisha, where he utilizes his expertise to foster innovation in optical technology. His numerous patents reflect his dedication and the impact of his work on the industry.

Collaborations

Yoshii often collaborates with talented colleagues such as Seiji Takeuchi and Noriyuki Nose. This synergy among engineers and inventors bolsters the creativity and efficacy of their projects, contributing to the cutting-edge advancements at Canon.

Conclusion

Minoru Yoshii's innovative work and extensive patent portfolio underscore his significant role in the advancement of optical technologies. As an inventor at Canon, he continues to push the boundaries of what is possible, shaping the future of optical applications in various fields. His contributions are not just technical achievements, but also milestones in the pursuit of innovation.

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